METHOD OF PRODUCTION OF GRANULATED CARBAMIDE AND GRANULATION TOWER FOR REALIZATION OF THIS METHOD
FIELD: manufacture of fertilizers; equipment for production of granulated carbamide. ^ SUBSTANCE: proposed method of production of granulated carbamide includes spraying its melt in granulation zone at contact with cooling air flow, hardening of drops of melt in free fall, treatment of granules with...
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| creator | ESIN IGOR' VENIAMINOVICH PERMINOV JURIJ IVANOVICH FOKEEV ALEKSANDR PAVLOVICH SKUDIN ALEKSEJ GEORGIEVICH GUSEV IVAN VLADIMIROVICH PECHNIKOVA GALINA NIKOLAEVNA KOSTIN OLEG NIKOLAEVICH KUZNETSOV NIKOLAJ MIKHAJLOVICH SOLDATOV ALEKSEJ VLADIMIROVICH CHEBLAKOV NIKOLAJ VALENTINOVICH PROKOP'EV ALEKSANDR ALEKSEEVICH |
| description | FIELD: manufacture of fertilizers; equipment for production of granulated carbamide. ^ SUBSTANCE: proposed method of production of granulated carbamide includes spraying its melt in granulation zone at contact with cooling air flow, hardening of drops of melt in free fall, treatment of granules with modifying agent- mixture of surfactant with film-forming agent in aqueous medium in the course of free fall at temperature of from 80 to 110°C and cooling of granules thus formed. Mixture is used in the amount of 0.01-0.16% of carbamide mass in terms of dry residual. Use may be made of ionogenic and nonionogenic agents. Film-forming agent may be selected from group containing amino-formaldehyde and epoxy resins, polyvinyl acetate and animal glues. Granulation tower has hollow housing with melt sprayer in upper part and apparatus for cooling the granules in fluidized layer in lower part, as well as injectors for spraying modifying agent which are located over circumference in lower part of tower above cooling apparatus. ^ EFFECT: enhanced strength of granules. ^ 3 cl, 1 dwg, 10 ex |
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Mixture is used in the amount of 0.01-0.16% of carbamide mass in terms of dry residual. Use may be made of ionogenic and nonionogenic agents. Film-forming agent may be selected from group containing amino-formaldehyde and epoxy resins, polyvinyl acetate and animal glues. 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Mixture is used in the amount of 0.01-0.16% of carbamide mass in terms of dry residual. Use may be made of ionogenic and nonionogenic agents. Film-forming agent may be selected from group containing amino-formaldehyde and epoxy resins, polyvinyl acetate and animal glues. Granulation tower has hollow housing with melt sprayer in upper part and apparatus for cooling the granules in fluidized layer in lower part, as well as injectors for spraying modifying agent which are located over circumference in lower part of tower above cooling apparatus. ^ EFFECT: enhanced strength of granules. ^ 3 cl, 1 dwg, 10 ex</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY FERTILISERS MANUFACTURE THEREOF METALLURGY NITROGENOUS FERTILISERS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING |
| title | METHOD OF PRODUCTION OF GRANULATED CARBAMIDE AND GRANULATION TOWER FOR REALIZATION OF THIS METHOD |
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